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F4D2: Invaders exit check.
Used by the routine at Invaders_Loop.
Input
Output
Check to see if Wally has left the arcade room.
Invaders_ExitCheck F4D2 LD HL,(Wally_X) See if Wally is at the far left of the room.
F4D5 LD A,L
F4D6 SUB $08
F4D8 SUB $01
F4DA CP $FE
F4DC RET C Do nothing if not.
F4DD LD A,$15
F4DF LD (Wally_RoomNo),A Move into the next room and update.
F4E2 LD HL,$98D0
F4E5 LD (Wally_X),HL
F4E8 CALL Room_Enter
F4EB LD SP,$0000
F4EE XOR A
F4EF LD (IsArcadeMode),A
F4F2 JP GameLoop Go back to normal game play.
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